What sealant do you suggest for the gearbox gaskets?





What sealant do you suggest for the gearbox gaskets?
 
I lay gaskets on a flat of Gladwrap and apply an almost transparent (just wetting the gasket) wipe of 518 to both sides.

The gasket surfaces come into play also but why risk a weep especially at the inner cover.
 
I do very much the same sort of thing ..... Gladwrap .. Lol ! My wife doesn't buy the stuff so I use greaseproof paper instead ( baking paper )
 
Clingfilm .... sandwich wrap that clings to itself ...


and is a PITA to use to be honest ;)
 
I recommend the JSMotorsport gaskets.

No need for any gasket cement. Not a drop of oil from engine or gearbox where used.

jsmotorsport.com

The Best Gaskets for Norton Motorcycles

Reusable Gaskets for Norton Twins JS Motorsport Gaskets are 1/32" thick reusable fiberglass reinforced silicone gaskets. You can tighten them down the same as paper gaskets and they won'
jsmotorsport.com
 
Grandad said:
Clingfilm .... sandwich wrap that clings to itself ...


and is a PITA to use to be honest ;)
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Ah! 'cling film' That's a bit more descriptive and generic......It's amazing how much stuff, in the US in particular, is known by non-descriptive brand names.

For gaskets, I will stick with Wellseal where used, which is not much, and for me isn't on the AMC gearbox, so what I have will take years to run out, and, a 50ml bottle of Loctite 518 is 50€ on Amazon.fr

(On my TTi box there are no gaskets anyway, Threebond only on the main cover joins, but Wellseal on the clutch cable access/oil filler orifice to enable easy open and closing)

Making sure gaskets have a chance of reuse is a different question, or for locating them, I smear a little grease on them, e.g. timing and rocker cover.
 
Use grease on gaskets unless there's a reason for something more
Then use loctite 518 or wellseal as others have suggested
 
SteveA said:
Ah! 'cling film' That's a bit more descriptive and generic......It's amazing how much stuff, in the US in particular, is known by non-descriptive brand names.
Click to expand...
Glad Warp (brand name), Saran Wrap (brand name), Plastic Wrap (proper name). Never heard of cling film but would have thought of the industrial wrapping often used on pallets as its actual design is to stick together whereas that's a annoying side-effect of plastic wrap.

It's certainly not only the US that does this. We vacuum the floor, not Hoover (Brand Name) it.

Then there's Kleenex (Brand Name) for facial tissue. I think this one is used in many countries as are Jet Ski, Velcro, Walkman, Crock-Pot and hundreds more.
 
Permatex 80697 Copper Spray-A-Gasket Hi-Temp Adhesive Sealant https://a.co/d/bGOgntW

The great thing about this stuff is that it is tacky when it dries and keeps the gasket in place, but once it cures, it releases and the gasket can be reused. (With the exception of head gaskets of course)
 
As per hemmings gb rebuild DVD, notihng or only grease on gb gaskets. No leaks on my gb following that guidance.
 
Dan1950 said:
Permatex 80697 Copper Spray-A-Gasket Hi-Temp Adhesive Sealant https://a.co/d/bGOgntW

The great thing about this stuff is that it is tacky when it dries and keeps the gasket in place, but once it cures, it releases and the gasket can be reused. (With the exception of head gaskets of course)
Click to expand...
I've never believed in sealers on gaskets but based on a recommendation here a few months ago I got some of this specifically for timing cover gaskets to help keep them in place while installing the cover. I've used grease for that before and it works but so far, I like this better. Any oil or grease on a gasket can make it swell - that's good when installed, but I would rather not pre-swell them.

Even better is a take-off on what Margie said a while back. I cut the heads of some long 1/4-20 screws and screw a few into the crankcase skipping every other hole, slip the gasket in place, and then the timing cover. Put the final screws in the skipped holes and then the guide screws can be unscrewed. Takes a few minutes more but no chance of not realizing that the gasket has slipped and it gets damaged.
 
SteveA said:
WTF is gladwrap?
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Dow introduced Saran wrap in 1949 but we did not see it until 1966 in the form of Glad Wrap (Made by The Glad Products Company in the USA founded in 1963)
These days it is also marketed as GLAD cling wrap.
Either way it makes it easy to apply 518 sparingly with minimal mess and disposal.

What sealant do you suggest for the gearbox gaskets?

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I never saw the point of applying grease to modern gaskets (It seemed to come from the days of cork usage) when the likes of 515 and 518 add an actual seal and make removal easy also.

I still use WellSeal on hard joints, left to tack off for at least 25 minutes (Even the top cylinder head cover which also forms the upper journals for the cam shaft is sealed with WellSeal on my DR780)

Other amazing products, Pledge (First sold in 1958)
Good on everything from engine cases to plastic (and furniture as intended for)

What sealant do you suggest for the gearbox gaskets?
 
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